Brake shoe



. J. S. THOMPSON.

BRAKE SHOE. APPLICATION FILED DEC.17, 1919.

- 1,402,116. Patented Jan. 3,1922.

3 SHEETS-SHEET 1- wz ieraiw J. S. THOMPSON.

BRAKE SHOE.

APPLICATION FILED DEC-17 199- 1,402,116. Patented Jan. 3, 1922.

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BRAKE SHOE.

APPLICATION FILED DEC.11, 1919.

. Patented Jan; 3, 1922. I

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JAMES S. THOMPSON, OF IPELHAM, NEW YORK, ASSIG1\TOR TO THE AMERICAN BRAKE SHOE AND FOUNDRY COMPANY, OFWVILMINGTON, DELAWARE, A. CORPORATION OF DELAWARE.

BRAKE SHQE. 7

Application filed December 17, 1919. Serial No. 345,532.

To all whom it may concern:

Be it known that 1, JAMES S. THOMPSON, a citizen of the United States, residing at Pelham, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Brake Shoes, of which the following is a specification.

This invention relates to improvements in brake shoes, and more particularly to that type in which the body metal is cast upon a plurality of strips, or a bundle, of expanded metal, or wire mesh, or other binding, bonding or reinforcing reticulated metal.

Very satisfactory results have been obtained in the past by arranging strips of expanded metal in layers, or in a bundle, one upon the other and parallel with the wearing face of the shoe whereby a wearing face will always be provided of a finely divided and composite character.

I have discovered that even better result may be obtained by arranging the expanded metal or other reticulated metal strips on edge to the wearing face, instead of fiatwise thereto, and spaced apart between the sides of the shoe. 7

The object of the invention is to improve this type of brake shoes by arranging the expanded metal or other reticulated metal strips therein in a novel manner which simplifies the construction, produces a stronger and stiffer shoe, and at the same time preserves all the desirable features of a shoe in which the ductile metal is distributed throughout the cast metal body to provide a composite wearing face in which the constituent parts constantly change in area'and position.

My present invention may be embodied in different ways and in different kinds and shapes of brake shoes, and in the accompanying drawings I have illustrated some of these embodiments. Referring to the draw- Fig. 1 is a side elevation partly in section of a simple form of car shoe having expanded metal strips embedded therein in an inclined position on edge to the wearing face of the shoe. 7

Fig. 2 is a transverse sectional view on the line 22 of Fig. 1. V

Fig. 3 is a view similar. to Fig. 1 showing the expanded metal strips in staggered relation.

Fig. 4 is a transverse sectional view on the line 4-4 of Fig. 3. Y I

Fig. 5 shows a flanged brake shoe having the expanded metal strips with insert'sections or blocks cast thereon and embedded in the shoe. V

Fig. 6 is a transverse sectional view on the line 6-6 of Fig. 5.

Fig. 7 is a view similar to Fig. 5 showing the expanded metal strips in staggered relation.

Fig. 8 is a transverse sectional view on the line 88 of Fig. '7'.

F igs'. 9 to 12 are sectional views corresponding to Figs. 2, 4, 6 and 8 but showing the strips upright instead of inclined.

F1g. 13 is a view similar to Fig. 5 with wire mesh strips substituted for the ex 'panded metal strips.

Fig. 14 is a cross-sectional view on the line 14-14 of Fig. 13. v

Patented Jan. 3 ,1922. 2

Fig. 15 is a view similar to Fig. 13 with the wire relation. Y

Fig. 16 is a cross-sectional view on the line'1616 of Fig. 15. V

7 Figs. 17 and 18 are sectional views corresponding to Figs 14 and 16 but showing the strips upright instead of'inclined.

Referring to the drawings, the body 16 is preferably provided with a suitable reinforcing and strengthening ductile metal back 17 which may be made in any of the'va riety of different ways well known inthe art. A plurality of reticulated metal strips mesh strips arranged in staggered "are arranged on edge to the wearing face of the shoe and spaced apartbetween the sides of the shoe- These strips may conslst of commercial expanded metal 18, as shownin Figs. 1 to 12 inclusive, or they may consist of commercial wire mesh 19, as shown in Figs. 13 to 18 inclusive, or they may consist of any other'suitable reinforcing, reticulated metal which will produce the same, or substantially the same, results. The strips may be arranged in the body of the shoe with their interstices registering as shown in Figs. 1 5 and 12, or they may be arranged in staggered relation as shown in Figs, 3, 7 and 15, The strips are preferably curved on an arc corresponding substantially with the curvature of the wearing face of the shoe, and they may be spot-welded to the reinforcing back where they contact therewith, if desired;

Insert sections or blocks of any desired metal may be cast on the strips, in

suitable shapes and at such intervals as may be required, so that the sections for blocks will be rigidly interlocked with the formj an insert whichis placed in a mold with the reinforcing backand the body metal is then cast thereonto form a shoe 4 of composite character in which all the parts are so interlocked that thedanger of parts of the shoe falling away in case of fracturevwill be practically, if not entirely, eliminated. a

Theretlculated metal strips of expanded metal, wire mesh, or other material are arranged on edge to the wearing face of the shoe, in an inclined. or tilted position as .shown in Figs. 2, 4i, 6, 8, 14: and 16 or in an upright positionsubstantially perpendicular to the wearing face as shown in Figs. 9,10, 11, 12, 17 and 18. When the strips arein'clined or tilted, the position of the parts thereof'exposed on the wearing face of the shoe will change as the shoe wears down thereby avoiding any. chances there may be ofthe strips cutting or scoring the wheel. V.

I have shown the reticulated strips regularly spaced between the sides of the shoe,

and, while this is now considered to be the most desirable embodiment of the invention, 1 may vary the arrangement and may position the strips close together inthe form of a bundle if it'shall prove'to be a desirable construction. The strips may be heldin their proper relative position for casting thebodymetal by any suitable meanswell known infoundry practice, but when insert sections or blocks are employed they will holdthe strips inposition, The use of insert sections or blocks in various sizes and shapes and of different materials has been well known in the brakeshoe art for many cars, and it will not be necessary to enter into a discussion of the scope ofthe inven.

tion with relation thereto except to say that I reserve-the "right to use any insert sections or blocks cast on any suitable reticulated metal strips that may come within the scope of the following claims.

Iclaim:

1. A brake shoe. comprising reinforcing .back, a plurality of reticulated metal strips,

plurality of reticulated metal strips" spaced apart at intervals and embedded in. the body in an inclined positionon edge to thewear- 'ing face of the shoe. I

ing spaced apart at intervals between the sides of the shoe and arranged on edge to the wearing face of the shoe.- Y 5. A brake shoe comprising a reinforcing back, a plurality of reticulated metal strips, sections or blocks east on the strips and eX- tending transversely of the strips atv spaced intervals between the ends ofthe strips, and a body cast on the back and stripsand sec: tions or blocks, said strips being spaced apart at intervals between thesides oflthe shoe and arranged 011 edge to the-wearing face ofthe'shoe, 6. A brakeshoe comprising a body, a plurality of reticulatedmetal strips embedded in the body in an inclined position on edge to the wearing face of theashoe, andinsert sections or blocks cast on the strips at spaced intervals and embedded therewith in the bodyoftheshoe. I Q

7. Y lbrake shoe comprising a body, and a plurality of expandedmetal-strips embedded in the body in an inclined position on edge to the wearing face of the shoe. 8. A brake shoe comprisinga body, and. a plurality of expanded metal. strips embedded in'the body at spaced'intervals transiversely of the shoe, said strips being correspondingly inclined on edge to, the'wea'ring face ofthe shoe. y

9; A brake shoe comprising' a reinforcing back, aplurality. of reticulated metal strips arranged in an inclined position; on edge to said back, and a body cast on the back and strips. 7 l a Y 10. A brake shoe comprising a reinforcing back, a plurality of reticulated metal strips, and a body feast on the backand strips, said strips being spaced'apa-rt at intervals and arranged in an inclined position inthe shoe on edge to-the" back and to the wearingface of the shoe. i r

11. A brake shoe comprising a reinforcing back, a plurality of reticulated metal strips arranged side by side and spacedapart at intervals with the openings in the several strips in substantial registration, and a body cast on the back and strips, said strips being arranged in an inclined position on edge to the back and to the wearing face of thes'hoe.

- 12. A brake shoe comprising areinforcing back, a plurality of reticulated metal strips arranged on edge to the back and spot- Welded thereto, and a body cast on the back and strips.

14. A brake shoe comprising a reinforcing back, a plurality of expanded metal strips arranged on edge to the back and secured directly thereto, and a body cast on the back and strips.

15. A brake shoe comprising a reinforcing back, a plurality of reticulated metal strips spaced apart in'an inclined position on edge to the back and secured thereto, and a body cast on the back and strips.

16. A brake shoe comprising a reinforcing back, a plurality of reticulated metal strips secured on edge to the back, a plurality of insert sections or blocks cast on said strips,

and abody cast on the back,strips and secand secured thereto,ia plurality of insert sections or blocks cast on said strips, and a body cast on the back, strips and sections orblocks. i

18. A brake shoe comprising a reinforcing back, a plurality of reticulated metal strips secured in an inclined position on edge to the back, a plurality ofinsert sections or blocks cast on said strips, and a body cast on the back, strips and sections or blocks.

JAMES S. THOMPSON.

Witness: 7 a

M. A. Kinom. 

